@media(min-width:900px){
*{
  margin: 0;
  padding: 0;
}
#app{
  display: flex;
  margin-top: 70px;
  flex-direction: column;
  min-width: 311px;
}
.top{
  width: 100%;
  height: 200px;
  background: aqua;
}
.picture{
  position: relative;
  display: flex;
  width: 100%;
  height: auto;
}
.picture img{
  display: block;
  width: 100%;
  height: auto;
}
.picture .btn{
  width: 60px;
  position: absolute;
  top: 50%;
  margin-top: -25px;
  height: 50px;
  color: #fff;
  /* background: rgba(0,0,0,0.3); */
  /* line-height: 50px; */
  /* text-align: center; */
  font-size: 30px;
  font-family: "宋体";
  cursor: pointer;
  display: none;
}
.picture:hover .btn{
  display: block;
}
.picture .btnLeft{left: 20px;}
.picture .btnRit{right: 20px;}
/*********主要业务介绍*********/
.main_business{
  min-height: 1021px;
  width: 100%;
  display: flex;
  justify-content: center;
}
.title{
  font-size: 32px;
}
.box{
  display: -ms-grid;
  display: grid;
  width: 80%;
  -ms-grid-columns: 100%;
  -ms-grid-rows: auto auto ;
  grid-template-columns: 100%;
  grid-template-rows: auto auto ;
  text-align: center;
  justify-content: center;
  padding: 4vh;
}
.business{
  box-sizing: border-box;
  width: 100%;
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  padding: 4vh;
}
.business>.industry1 {
  width: 30%;
  min-width: 290px;
  padding: 2vh;
  flex-grow: 1;
}
.business>.industry2 {
   width: 30%;
   padding: 2vh;
   min-width: 290px;
   flex-grow: 1;
}
.business>.industry3 {
  width: 30%;
  padding: 2vh;
  min-width: 290px;
  flex-grow: 1;
}
.business>.industry4 {
  width: 30%;
  padding: 2vh;
  min-width: 290px;
  flex-grow: 1;
}
.business>.industry5 {
  width: 30%;
  padding: 2vh;
  min-width: 290px;
  flex-grow: 1;
}
.business>.industry6 {
  width: 30%;
  padding: 2vh;
  min-width: 290px;
  flex-grow: 1;
}
.anim_fade_image,
.anim_fade_image2,
.anim_fade_image3,
.anim_fade_image4,
.anim_fade_image5,
.anim_fade_image6 {   
 animation: fadeInOut 1s linear alternate forwards ;
}
@keyframes fadeInOut {
 0% {
     opacity:0;
     width: 30%;
  }
 50% {
     opacity: 0.5;
     width: 65%;    
 }
 100% {
     opacity:1;
     width: 100%;
 }
}
.anim_fade_image7 {   
animation: fadeInOut1 2s linear alternate forwards ;
}
@keyframes fadeInOut1 {
0% {
    opacity: 0;
 }
50% {
    opacity: 0.5;   
}
100% {
    opacity:1;
}
}
#business_logo1 img{
  opacity: 0;
}
#business_logo2 img{
  opacity: 0;
}
#business_logo3 img{
  opacity: 0;
}
#business_logo4 img{
  opacity: 0;
}
#business_logo5 img{
  opacity: 0;
}
#business_logo6 img{
opacity: 0;
}
/***主要业务介绍和科技成果介绍区 ***/
.last_introduce {
  display: flex;
  width: 100%;
  background-color: #ffffff;
  justify-content: space-between;
  flex-wrap: wrap
}
#business_left {
  width: 70%;
  display: grid;
  grid-template-columns: 100%;
  grid-template-rows: auto auto;
  flex-grow: 1;
  background-color: #0c4ab6;
}
#photo {
  width: 100%;
  height: auto;
}
#photo img {
  width: 100%;
  height: auto;
  display: block;
  opacity: 0;
}
#main_business {
  padding-top: 5vh ;
  padding-bottom: 5vh;
  width: 100%;
  background-color: #0c4ab6;
}
#main_business_text {
  padding: 1vh;
  width: 75%;
  color: #ffffff;
  line-height: 30px;
  text-align: left;
  margin: 0 auto;
  font-size: 14px;
}
/**科技成果展示**/
.achievements {
  width: 30%;
  background-color: #3076e5;
  padding-top: 2vh;
  padding-bottom: 2vh;
  min-width: 245px;
  flex-grow: 1;
}
#achievements_text {
  width: 80%;
  margin: 0 auto;
  color: #ffffff;
  line-height: 40px;
  text-align: left;
  flex-grow: 1;
}
.title1_span{
    padding-bottom: 15px;
    border-bottom: 2px solid blue;
}
.title2_span{
  padding-bottom: 10px;
  border-bottom: 2px solid red;
}
}
@media(min-width:550px) and (max-width:900px){
  *{
    margin: 0;
    padding: 0;
  }
  #app{
    display: flex;
    margin-top: 70px;
    flex-direction: column;
    min-width: 280px;
  }
  .top{
    width: 100%;
    height: 200px;
    background: aqua;
  }
  .picture{
    position: relative;
    display: flex;
    width: 100%;
    height: auto;
  }
  .picture img{
    display: block;
    width: 100%;
    height: auto;
  }
  .picture .btn{
    width: 60px;
    position: absolute;
    top: 50%;
    margin-top: -25px;
    height: 50px;
    color: #fff;
    /* background: rgba(0,0,0,0.3); */
    /* line-height: 50px; */
    /* text-align: center; */
    font-size: 30px;
    font-family: "宋体";
    cursor: pointer;
    display: none;
  }
  .picture:hover .btn{
    display: block;
  }
  .picture .btnLeft{left: 20px;}
  .picture .btnRit{right: 20px;}
  /*********主要业务介绍*********/
  .main_business{
    /* min-height: 1021px; */
    width: 100%;
    display: flex;
    justify-content: center;
  }
  .title{
    font-size: 32px;
  }
  .box{
    display: -ms-grid;
    display: grid;
    width: 90%;
    -ms-grid-columns: 100%;
    -ms-grid-rows: auto auto ;
    grid-template-columns: 100%;
    grid-template-rows: auto auto ;
    text-align: center;
    justify-content: center;
    /* padding: 4vh; */
  }
  .business{
    box-sizing: border-box;
    width: 100%;
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    /* padding: 4vh; */
  }
  .business>.industry1 {
    width: 30%;
    min-width: 500px;
    padding: 2vh;
    flex-grow: 1;
  }
  .business>.industry2 {
     width: 30%;
     padding: 2vh;
     min-width: 500px;
     flex-grow: 1;
  }
  .business>.industry3 {
    width: 30%;
    padding: 2vh;
    min-width: 500px;
    flex-grow: 1;
  }
  .business>.industry4 {
    width: 30%;
    padding: 2vh;
    min-width: 500px;
    flex-grow: 1;
  }
  .business>.industry5 {
    width: 30%;
    padding: 2vh;
    min-width: 500px;
    flex-grow: 1;
  }
  .business>.industry6 {
    width: 30%;
    padding: 2vh;
    min-width: 500px;
    flex-grow: 1;
  }
  .anim_fade_image,
  .anim_fade_image2,
  .anim_fade_image3,
  .anim_fade_image4,
  .anim_fade_image5,
  .anim_fade_image6 {   
   animation: fadeInOut 1s linear alternate forwards ;
  }
  @keyframes fadeInOut {
   0% {
       opacity:0;
       width: 30%;
    }
   50% {
       opacity: 0.5;
       width: 65%;    
   }
   100% {
       opacity:1;
       width: 100%;
   }
  }
  .anim_fade_image7 {   
  animation: fadeInOut1 2s linear alternate forwards ;
  }
  @keyframes fadeInOut1 {
  0% {
      opacity: 0;
   }
  50% {
      opacity: 0.5;   
  }
  100% {
      opacity:1;
  }
  }
  #business_logo1 img{
    opacity: 0;
  }
  #business_logo2 img{
    opacity: 0;
  }
  #business_logo3 img{
    opacity: 0;
  }
  #business_logo4 img{
    opacity: 0;
  }
  #business_logo5 img{
    opacity: 0;
  }
  #business_logo6 img{
  opacity: 0;
  }
  /***主要业务介绍和科技成果介绍区 ***/
  .last_introduce {
    display: flex;
    width: 100%;
    background-color: #ffffff;
    justify-content: space-between;
    flex-wrap: wrap
  }
  #business_left {
    width: 70%;
    display: grid;
    grid-template-columns: 100%;
    grid-template-rows: auto auto;
    flex-grow: 1;
    background-color: #0c4ab6;
  }
  #photo {
    width: 100%;
    height: auto;
  }
  #photo img {
    width: 100%;
    height: auto;
    display: block;
    opacity: 0;
  }
  #main_business {
    padding-top: 5vh ;
    padding-bottom: 5vh;
    width: 100%;
    background-color: #0c4ab6;
  }
  #main_business_text {
    padding: 1vh;
    width: 75%;
    color: #ffffff;
    line-height: 30px;
    text-align: left;
    margin: 0 auto;
    font-size: 14px;
  }
  /**科技成果展示**/
  .achievements {
    width: 30%;
    background-color: #3076e5;
    padding-top: 2vh;
    padding-bottom: 2vh;
    min-width: 245px;
    flex-grow: 1;
  }
  #achievements_text {
    width: 80%;
    margin: 0 auto;
    color: #ffffff;
    line-height: 40px;
    text-align: left;
    flex-grow: 1;
  }
  .title1_span{
      padding-bottom: 15px;
      border-bottom: 2px solid blue;
  }
  .title2_span{
    padding-bottom: 10px;
    border-bottom: 2px solid red;
  }
  }
  @media(min-width:0px) and (max-width:550px){
    *{
      margin: 0;
      padding: 0;
    }
    #app{
      display: flex;
      margin-top: 70px;
      flex-direction: column;
      min-width: 280px;
    }
    .top{
      width: 100%;
      height: 200px;
      background: aqua;
    }
    .picture{
      position: relative;
      display: flex;
      width: 100%;
      height: auto;
    }
    .picture img{
      display: block;
      width: 100%;
      height: auto;
    }
    .picture .btn{
      width: 60px;
      position: absolute;
      top: 50%;
      margin-top: -25px;
      height: 50px;
      color: #fff;
      /* background: rgba(0,0,0,0.3); */
      /* line-height: 50px; */
      /* text-align: center; */
      font-size: 30px;
      font-family: "宋体";
      cursor: pointer;
      display: none;
    }
    .picture:hover .btn{
      display: block;
    }
    .picture .btnLeft{left: 20px;}
    .picture .btnRit{right: 20px;}
    /*********主要业务介绍*********/
    .main_business{
      /* min-height: 1021px; */
      width: 100%;
      display: flex;
      justify-content: center;
    }
    .title{
      font-size: 32px;
    }
    .box{
      display: -ms-grid;
      display: grid;
      width: 90%;
      -ms-grid-columns: 100%;
      -ms-grid-rows: auto auto ;
      grid-template-columns: 100%;
      grid-template-rows: auto auto ;
      text-align: center;
      justify-content: center;
      /* padding: 4vh; */
    }
    .business{
      box-sizing: border-box;
      width: 100%;
      display: flex;
      justify-content: center;
      flex-wrap: wrap;
      /* padding: 4vh; */
    }
    .business>.industry1 {
      width: 30%;
      min-width: 260px;
      padding: 2vh;
      flex-grow: 1;
    }
    .business>.industry2 {
       width: 30%;
       padding: 2vh;
       min-width: 260px;
       flex-grow: 1;
    }
    .business>.industry3 {
      width: 30%;
      padding: 2vh;
      min-width: 260px;
      flex-grow: 1;
    }
    .business>.industry4 {
      width: 30%;
      padding: 2vh;
      min-width: 260px;
      flex-grow: 1;
    }
    .business>.industry5 {
      width: 30%;
      padding: 2vh;
      min-width: 260px;
      flex-grow: 1;
    }
    .business>.industry6 {
      width: 30%;
      padding: 2vh;
      min-width: 260px;
      flex-grow: 1;
    }
    .anim_fade_image,
    .anim_fade_image2,
    .anim_fade_image3,
    .anim_fade_image4,
    .anim_fade_image5,
    .anim_fade_image6 {   
     animation: fadeInOut 1s linear alternate forwards ;
    }
    @keyframes fadeInOut {
     0% {
         opacity:0;
         width: 30%;
      }
     50% {
         opacity: 0.5;
         width: 65%;    
     }
     100% {
         opacity:1;
         width: 100%;
     }
    }
    .anim_fade_image7 {   
    animation: fadeInOut1 2s linear alternate forwards ;
    }
    @keyframes fadeInOut1 {
    0% {
        opacity: 0;
     }
    50% {
        opacity: 0.5;   
    }
    100% {
        opacity:1;
    }
    }
    #business_logo1 img{
      opacity: 0;
    }
    #business_logo2 img{
      opacity: 0;
    }
    #business_logo3 img{
      opacity: 0;
    }
    #business_logo4 img{
      opacity: 0;
    }
    #business_logo5 img{
      opacity: 0;
    }
    #business_logo6 img{
    opacity: 0;
    }
    /***主要业务介绍和科技成果介绍区 ***/
    .last_introduce {
      display: flex;
      width: 100%;
      background-color: #ffffff;
      justify-content: space-between;
      flex-wrap: wrap
    }
    #business_left {
      width: 70%;
      display: grid;
      grid-template-columns: 100%;
      grid-template-rows: auto auto;
      flex-grow: 1;
      background-color: #0c4ab6;
    }
    #photo {
      width: 100%;
      height: auto;
    }
    #photo img {
      width: 100%;
      height: auto;
      display: block;
      opacity: 0;
    }
    #main_business {
      padding-top: 5vh ;
      padding-bottom: 5vh;
      width: 100%;
      background-color: #0c4ab6;
    }
    #main_business_text {
      padding: 1vh;
      width: 75%;
      color: #ffffff;
      line-height: 30px;
      text-align: left;
      margin: 0 auto;
      font-size: 14px;
    }
    /**科技成果展示**/
    .achievements {
      width: 30%;
      background-color: #3076e5;
      padding-top: 2vh;
      padding-bottom: 2vh;
      min-width: 245px;
      flex-grow: 1;
    }
    #achievements_text {
      width: 80%;
      margin: 0 auto;
      color: #ffffff;
      line-height: 40px;
      text-align: left;
      flex-grow: 1;
    }
    .title1_span{
        padding-bottom: 15px;
        border-bottom: 2px solid blue;
    }
    .title2_span{
      padding-bottom: 10px;
      border-bottom: 2px solid red;
    }
    }